Yeah this is clearly a American issue. It's certainly not true in Asian/South Asian countries, sure we lose touch with friends but whenever we meet there is an instant and unmistakable bond. When I moved to the US, I couldn't understand why Americans were so "distant". I don't have the same friendships with them as I do with others. Sad but true.
It was even more strange for me because often our conversations would be relatively honest and about somewhat personal topics (not just the weather, what cities we'd been to etc) which, in my experience, you only broach when you really want to discuss such things and feel a connection with a person, but, apart from a few people there was still always that feeling that people were just being polite and basically waiting for you to excuse them. YMMV.